From a71b7b63c4fdab845b268346902da579d97aaa0a Mon Sep 17 00:00:00 2001
From: DreamPiggy <lizhuoli1126@126.com>
Date: Fri, 27 Oct 2017 17:13:42 +0800
Subject: [PATCH] Add all 4 standard HEIC brand file signature, ftypheic &
 ftypheix is for single image, ftyphevc & ftyphevx is for sequence image

---
 SDWebImage/NSData+ImageContentType.m | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/SDWebImage/NSData+ImageContentType.m b/SDWebImage/NSData+ImageContentType.m
index 888a8107..6a590611 100644
--- a/SDWebImage/NSData+ImageContentType.m
+++ b/SDWebImage/NSData+ImageContentType.m
@@ -51,9 +51,12 @@
         }
         case 0x00: {
             if (data.length >= 12) {
-                //....ftypheic
+                //....ftypheic ....ftypheix ....ftyphevc ....ftyphevx
                 NSString *testString = [[NSString alloc] initWithData:[data subdataWithRange:NSMakeRange(4, 8)] encoding:NSASCIIStringEncoding];
-                if ([testString isEqualToString:@"ftypheic"]) {
+                if ([testString isEqualToString:@"ftypheic"]
+                    || [testString isEqualToString:@"ftypheix"]
+                    || [testString isEqualToString:@"ftyphevc"]
+                    || [testString isEqualToString:@"ftyphevx"]) {
                     return SDImageFormatHEIC;
                 }
             }